Fig. 1

Gene map displaying the position of GSTP1 promoter polymorphisms in the domestic dog and other canids. Exon 1 is shown as a shaded box, with its 3′end representing the start of the coding sequence, which consists of a single adenine base. Variants found only in dogs are shown in red, while those exclusive to wolves and/or coyotes are in green. Inset shows the DNA sequence for the major microsatellite 17-repeat unit allele and the genetic polymorphisms found within this repeat region; the sequence of the compound repeat associated with certain alleles is shown below this sequence